package com.dcy.prototype.deepclone;

import java.io.*;

/**
 * @Author：dcy
 * @Description:
 * @Date: 2021/1/20 16:04
 */
public class DeepProtoType implements Serializable, Cloneable {

    public String name;
    /**
     * 引入类型
     */
    public DeepCloneableTarget deepCloneableTarget;

    /**
     * 深拷贝实现：方式1 使用clone方法
     *
     * @return
     * @throws CloneNotSupportedException
     */
    @Override
    protected Object clone() throws CloneNotSupportedException {
        // 这里完成对基本数据类型（属性）和String的克隆
        Object deep = super.clone();
        // 对引用类型的属性，进行单独处理
        DeepProtoType deepProtoType = (DeepProtoType) deep;
        deepProtoType.deepCloneableTarget = (DeepCloneableTarget) deepCloneableTarget.clone();
        return deepProtoType;
    }

    // 深拷贝： 方式2 通过对象的序列化实现（推荐）
    public Object deepClone() {
        //创建流对象
        ByteArrayOutputStream bos = null;
        ObjectOutputStream oos = null;
        ByteArrayInputStream bis = null;
        ObjectInputStream ois = null;
        try {
            //序列化
            bos = new ByteArrayOutputStream();
            oos = new ObjectOutputStream(bos);
            oos.writeObject(this); //当前这个对象以对象流的方式输出
            //反序列化
            bis = new ByteArrayInputStream(bos.toByteArray());
            ois = new ObjectInputStream(bis);
            DeepProtoType copyObj = (DeepProtoType) ois.readObject();
            return copyObj;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        } finally {
            //关闭流
            try {
                bos.close();
                oos.close();
                bis.close();
                ois.close();
            } catch (Exception e2) {
                System.out.println(e2.getMessage());
            }
        }

    }
}
